<!DOCTYPE html>
<html lang="en" style="font-size:100px">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <script src="jquery-3.1.1.min.js">

    </script>
    <style>
         * {
            box-sizing: border-box;
            margin:0;
            padding:0;
            border:0;
        }
        html {
            font-size: 100px;
              width: 100%;
            height: 100%;
        }
        body{
            font-size:.2rem;
          width: 100%;
          height: 100%;
            margin:0;
            padding:0;
            border:0;
        }

        div {
            background: url('平台下载/bg2x.png') center  center no-repeat;
            background-size: 100% 100%;
            position: relative;
            margin: auto;
            width: 9rem;
            width: 100%;
           height: 100%;
            z-index: 2;
         text-align: center;
          
        }
        img{
            position: relative;
            margin: 0 auto;
            display: block;
        }
        #element{
         
            width: 3.4rem;
         
            top: 14%;
            /*left: 2.6rem;*/
        }
       #andiro{
           width: 6rem;
           top:30%;
       }
       #ios{
             width: 6rem;
           top:35%;
       }
    </style>
</head>

<body>
    <div>
       <img src="平台下载/矢量智能对象拷贝@2x.png" alt="" id="element">

        <img src="平台下载/安卓下载@2x.png" alt="" id="andiro">
        <img src="平台下载/IOS下载拷贝@2x.png" alt="" id="ios">
    </div>

   

</body>

</html>
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                if ($('body').width() >= 720) {
                    $('html').css('font-size', 100 + 'px');
                    return;
                }
                var scale = $('body').width() / 720;
                $('html').css('font-size', 100 * scale + 'px');
            };
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